SOLUTION: It is desired to add sufficient water to 6 liters of alcohol 95% pure to make a mixture 75% pure. How many liters of water are required

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Question 1112068: It is desired to add sufficient water to 6 liters of alcohol 95% pure to make a mixture 75% pure. How many liters of water are required
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +x+ = liters of water needed
+.95%2A6+=+5.7+ liter of alcohol in mixture
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+5.7+%2F+%28+x+%2B+6+%29+=+.75+
+5.7+=+.75%2A%28+x+%2B+6+%29+
+5.7+=+.75x+%2B+4.5+
+.75x+=+1.2+
+x+=+1.6+
1.6 liters of water needs to be added
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check:
+5.7+%2F+%28+1.6+%2B+6+%29+=+.75+
+5.7+%2F+7.6+=+.75+
+5.7+=+5.7+
OK